I realize that vr systems on the pc side of things are more sophisticated, but I'm going through Rush of Blood on the psvr and while fun, it seems to suffer from the exact same issues we have using camera based guns in a non vr capacity. When it works it's fun and I think it's worth the hassle to get it to work, but much like the wiimote sometimes the guns will get mal-aligned and you'll have to either compensate by aiming wrong or put your arms to their sides to re-calibrate. I think considering the extreme expense to get a pc vr setup (expensive pc + expensive headset) I'd be leery about jumping aboard just for the light gun games.
PSVR is using the same IR camera based move stuff that they had on the PS3 for TC4 and HotD4, which didn't work then and I can't imagine it working now, although I've never tried the system with PSVR. It's just too imprecise.
OR uses a multi camera setup which is much more accurate, although I haven't tried it, and Valve's lighthouse tracking used on the Vive and Index has a positioning accuracy of less than 2mm, and I've never had an issue with using it for iron sights games. I certainly can't tell any difference in terms of accuracy, if there is any then the fact you're lining up with the virtual model instead of your actual hand eliminates any discrepancy.
I'd say the only real issue right now isn't the tracking, but the resolution. It can be tough to get a decent sight picture at times, depending on the model you're looking at.
they're easy to turn off in the Virtual Desktop settings.
The problem I've found with virtual desktop is that I can't work out how to swap out my controller model for a gun. If I could do that, the program would be close to ideal, all I'd need to do would be to set up each game individually and launch a frontend for it.
As is, without the ability to line up shots, it's not much better than an Aimtrak, because you're stuck using the laser pointer if you want any accuracy. EmuVR has a gun model, but it's a very poor zapper one, and you're forced to play with screen filters and a fully modeled room sapping your CPU cycles, non-adjustable screen sizes aside from a few presets, you have to fiddle around with unplugging consoles and inserting carts if you want to switch games, and you're limited to only retroarch titles.
New retro arcade has a slightly better gun model, but the screens are tiny, it's MAME only, and you can only have a single light gun game in your arcade at once, which is just insanity. Hopefully, VR takes off at some point and we'll get something like Virtual Desktop with effectively universal support and lightgun models. Or, ideally, full on 3D support, but that's probably just a fantasy.